Event between (278361) 07JJ43 and star GA0620:11454369 with event index number of 257173
Geocentric closest approach at 2020/04/26 02:53:59 UTC
J2000 position of star is 16:59:39.6 -26:22:04
Equinox of date position of star is 17:00:48.1 -26:23:40
Stellar brightness G=12.7,
use SENSEUP=32
Star is 172 degrees from the moon.
Moon is 8% illuminated.
TNO apparent brightness V=20.7
TNO is 40.9 AU from the Sun
and 40.1 AU from the Earth.
The TNO is moving 17.3
km/sec on the sky relative to the star, or,
2.1 arcsec/hr.
The 1-sigma error in the time of the event is 219 seconds.
The 1-sigma cross-track error in the shadow position is
1525 km.
The TNO has an absolute magnitude Hv=4.5
Diameter=758.6 km assuming a 5% albedo -- 43.7 sec chord
Diameter=309.7 km assuming a 30% albedo -- 17.9 sec chord
Dynamical classification is SCATNEAR
Star training set for 278361, (2020/04/26 02:54UT) Object RA Dec mag sep mel Antares 16:30:39.4 -26:28:31 0.9 6.77 174 23Tau Sco 16:37:09.1 -28:15:23 2.8 5.60 172 26 Oph 17:01:24.3 -25:01:06 5.8 1.38 172 PPM 266235 17:00:43.0 -26:24:08 8.5 0.05 172 278361 17:00:55.0 -26:23:49 12.7 171 Positions are for equinox of date
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 278361, (2020/04/26 02:54UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 6.77 174 23Tau Sco 16:35:53.0 -28:12:58 2.8 5.60 172 26 Oph 17:00:09.6 -24:59:22 5.8 1.38 172 PPM 266235 16:59:27.5 -26:22:23 8.5 0.05 172 278361 16:59:39.6 -26:22:04 12.7 172 Positions are for J2000
Event circumstances last updated at 2018/06/12 20:00:45 UT
Marc W. Buie, Southwest Research Institute